A347191 - cp's OEIS frontend

A347191 Number of divisors of n^2-1.

n	a(n)
2	2
3	4
4	4
5	8
6	4
7	10
8	6
9	10
10	6
11	16
12	4
13	16
14	8
15	12
16	8
17	18
18	4
19	24
20	8
21	16
22	8
23	20
24	6
25	20
26	12
27	16
28	8
29	32
30	4
31	28
32	8
33	14
34	16
35	24
36	8
37	24
38	8
39	20
40	8
41	40
42	4
43	32
44	12
45	16
46	12
47	24
48	6
49	36
50	12
51	24
52	8
53	32
54	8
55	40
56	16
57	20
58	8
59	32
60	4
61	32
62	12
63	16
64	24
65	32
66	8
67	32
68	8
69	32
70	8
71	60
72	4
73	30
74	12
75	16
76	24
77	32
78	8
79	48
80	10
81	24

[2, 4, 4, 8, 4, 10, 6, 10, 6, 16, 4, 16, 8, 12, 8, 18, 4, 24, 8, 16, 8, 20, 6, 20, 12, 16, 8, 32, 4, 28, 8, 14, 16, 24, 8, 24, 8, 20, 8, 40, 4, 32, 12, 16, 12, 24, 6, 36, 12, 24, 8, 32, 8, 40, 16, 20, 8, 32, 4, 32, 12, 16, 24, 32, 8, 32, 8, 32, 8, 60, 4, 30, 12, 16, 24, 32, 8, 48, 10, 24]

cp's OEIS Frontend

A347191 Number of divisors of n^2-1.

Table of values

List of values

n	a(n)
2	2
3	4
4	4
5	8
6	4
7	10
8	6
9	10
10	6
11	16
12	4
13	16
14	8
15	12
16	8
17	18
18	4
19	24
20	8
21	16
22	8
23	20
24	6
25	20
26	12
27	16
28	8
29	32
30	4
31	28
32	8
33	14
34	16
35	24
36	8
37	24
38	8
39	20
40	8
41	40
42	4
43	32
44	12
45	16
46	12
47	24
48	6
49	36
50	12
51	24
52	8
53	32
54	8
55	40
56	16
57	20
58	8
59	32
60	4
61	32
62	12
63	16
64	24
65	32
66	8
67	32
68	8
69	32
70	8
71	60
72	4
73	30
74	12
75	16
76	24
77	32
78	8
79	48
80	10
81	24

n	a(n)
2	2
3	4
4	4
5	8
6	4
7	10
8	6
9	10
10	6
11	16
12	4
13	16
14	8
15	12
16	8
17	18
18	4
19	24
20	8
21	16
22	8
23	20
24	6
25	20
26	12
27	16
28	8
29	32
30	4
31	28
32	8
33	14
34	16
35	24
36	8
37	24
38	8
39	20
40	8
41	40
42	4
43	32
44	12
45	16
46	12
47	24
48	6
49	36
50	12
51	24
52	8
53	32
54	8
55	40
56	16
57	20
58	8
59	32
60	4
61	32
62	12
63	16
64	24
65	32
66	8
67	32
68	8
69	32
70	8
71	60
72	4
73	30
74	12
75	16
76	24
77	32
78	8
79	48
80	10
81	24

n	a(n)
2	2
3	4
4	4
5	8
6	4
7	10
8	6
9	10
10	6
11	16
12	4
13	16
14	8
15	12
16	8
17	18
18	4
19	24
20	8
21	16
22	8
23	20
24	6
25	20
26	12
27	16
28	8
29	32
30	4
31	28
32	8
33	14
34	16
35	24
36	8
37	24
38	8
39	20
40	8
41	40
42	4
43	32
44	12
45	16
46	12
47	24
48	6
49	36
50	12
51	24
52	8
53	32
54	8
55	40
56	16
57	20
58	8
59	32
60	4
61	32
62	12
63	16
64	24
65	32
66	8
67	32
68	8
69	32
70	8
71	60
72	4
73	30
74	12
75	16
76	24
77	32
78	8
79	48
80	10
81	24